List of top Physics Questions on Current electricity asked in Jharkhand Polytechnic

The resistivity of a conductor of 5 metre length is \(1.84 \times 10^{-6}\ \Omega\text{ m}\). What will be the resistivity of the conductor of 10 metre length and same diameter of same material provided that all other physical conditions remain same?

Ohm's law states that

A battery of 10 volt carries 20,000 C of charge through a resistance of \(20\ \Omega\). The work done in 10 seconds is

Which instrument can be used to measure potential difference across a resistor?

Which of the following statement is true about resistance?

Which of the following correctly lists good conductors of electricity?

An ideal ammeter -

When electric current is passed, electrons move from:

In domestic Indian house, the values of AC electrical power and frequency we receive are __________.

Which of the following is NOT generally used for electrical transmission lines?

Alloys are commonly used in electrical heating devices like toaster, electric iron because:

A cooler of 1500 W, 200 volt and a fan of 500 W, 200 volt are to be used from a household supply. The rating of fuse to be used is:

A 100 watt, 220 volt lamp takes a current of

Which of the following is true when resistors are connected in series?

When several resistors are connected in parallel in a circuit, what happens to the current and the equivalent resistance?

Find the correct statement from following :

In Joule's law of heating, the heat produced is directly proportional to which factor when the current remains constant?

A coil in the heater consume power P on passing current. If it is cut into halves and joined in parallel, it will consume power:

On which factor the resistance of a conductor does not depend?